Monitoring device and monitoring system

1. A monitoring device which is provided at a building in which an elevator is provided and which communicates with a center via an IP network, the monitoring device comprising:

circuitry

to be able to perform wireless communication in a plurality of wireless communication modes;

to select a selected wireless communication mode to be used to perform wireless communication from among the plurality of wireless communication modes on the basis of a first evaluation value indicating strength of a radio wave received by the monitoring device and a second evaluation value indicating communication quality between the monitoring device and the center;

to determine whether data indicating a state of the elevator includes voice data; and

to transmit the data indicating the state of the elevator to the center in the selected wireless communication mode, wherein

the circuitry selects the selected wireless communication mode based on a result of the determination of whether the data to be transmitted includes voice data.

2. The monitoring device according to claim 1 , wherein

the center includes a data center having a database and an information center at which an operator is present,

the second evaluation value indicates communication quality between the monitoring device and the data center, and

the circuitry is configured to transmit state data indicating a state of the elevator to the data center in the selected wireless communication mode and transmit voice data to the information center in the selected wireless communication mode.

3. The monitoring device according to claim 1 , wherein

the circuitry is configured to set priority for each of the plurality of wireless communication modes on the basis of the first evaluation value and the second evaluation value, and

the circuitry is configured to select a wireless communication mode for which the set priority is the highest among the plurality of wireless communication modes, as the selected wireless communication mode.

4. The monitoring device according to claim 3 , wherein

the circuitry is configured to store information on a connection prohibition mode,

in a case where data to be transmitted includes voice data, the circuitry is configured to select a wireless communication mode for which the set priority is the highest among the plurality of wireless communication modes except the connection prohibition mode, as the selected communication mode, and

in a case where data to be transmitted does not include voice data, the circuitry is configured to select a wireless communication mode for which the set priority is the highest among the plurality of wireless communication modes as the selected wireless communication mode.

5. The monitoring device according to claim 1 , wherein the plurality of wireless communication modes are wireless communication modes each using a different telecommunications carriers.

6. The monitoring device according to claim 1 , wherein the plurality of wireless communication modes are wireless communication modes each using a different communication standard.

7. The monitoring device according to claim 1 , wherein the plurality of wireless communication modes are digital wireless communication modes.

8. The monitoring device according to claim 1 , wherein

the circuitry is configured to store information indicating that one of the plurality of wireless communication modes is a connection prohibition mode,

in a case where the data to be transmitted includes voice data, the circuitry is configured to select a wireless communication mode for which a set priority is the highest among the plurality of wireless communication modes except the connection prohibition mode, as the selected communication mode.

9. The monitoring device according to claim 1 , wherein

the circuitry is configured to store information indicating that one of the plurality of wireless communication modes is a connection prohibition mode,

in a case where the data to be transmitted does not include voice data, the circuitry is configured to select a wireless communication mode for which a set priority is the highest among the plurality of wireless communication modes as the selected wireless communication mode.

10. A monitoring device which is provided at a building in which an elevator is provided and which communicates with a center via an IP network, the monitoring device comprising:

circuitry

to be able to perform wireless communication in a plurality of communication modes;

to select a selected communication mode to be used to perform wireless communication from among the plurality of communication modes on the basis of a first evaluation value indicating strength of a radio wave received by the monitoring device and a second evaluation value indicating communication quality between the monitoring device and the center; and

to transmit voice data and state data indicating a state of the elevator to the center in the selected communication mode, wherein

a way of selecting the selected communication mode depends on whether data to be transmitted includes voice data,

the circuitry is configured to set priority for each of the plurality of communication modes on the basis of the first evaluation value and the second evaluation value, and

the circuitry is configured to select a communication mode for which the set priority is the highest among the plurality of communication modes, as the selected communication mode,

the circuitry is configured to store information on a connection prohibition mode,

in a case where data to be transmitted includes voice data, the circuitry is configured to select a communication mode for which the set priority is the highest among the plurality of communication modes except the connection prohibition mode, as the selected communication mode, and

in a case where data to be transmitted does not include voice data, the circuitry is configured to select a communication mode for which the set priority is the highest among the plurality of communication modes as the selected communication mode.